Optional extras available at additional cost include armco repairs, safety car attendance, vehicle recovery, track closure, hospital stays and helicopter rides. I recommend avoiding these. If you can't, then the following price-list may help:

Hospital stay & air ambulance: Let's just say, do NOT go there without travel insurance! (Though a European Health Card - which replaced the E111 - may cover the hospital bit.)

Everything except the recovery truck is then subject to 19% VAT.

The record armco bill I'm aware of is €15,000. That was a car that managed to flatten a very impressive length of armco between the Quiddlebacher Hohe bridge and the crest on the approach to Flugplatz. But even a minor bump can turn into a surprisingly expensive day out.